mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2026-08-09 06:14:34 +02:00
Martin KaiserandArnaldo Carvalho de Melo
a4cbd51862
The perf ftrace test case runs: perf ftrace profile --graph-opts depth=5 sleep 0.1 and checks that the output contains a *clock_nanosleep function with a count of 1. This fails on a risc-v system that uses musl as its C library. musl's nanosleep syscall wrapper uses either the nanosleep or the clock_nanosleep syscall. Filter for sys_*nanosleep to allow both syscalls. Signed-off-by: Martin Kaiser <martin@kaiser.cx> Acked-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
88 lines
2.3 KiB
Bash
Executable File
88 lines
2.3 KiB
Bash
Executable File
#!/bin/bash
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# perf ftrace tests
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# SPDX-License-Identifier: GPL-2.0
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set -e
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# perf ftrace commands only works for root
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if [ "$(id -u)" != 0 ]; then
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echo "perf ftrace test [Skipped: no permission]"
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exit 2
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fi
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output=$(mktemp /tmp/__perf_test.ftrace.XXXXXX)
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cleanup() {
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rm -f "${output}"
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trap - EXIT TERM INT
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}
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trap_cleanup() {
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cleanup
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exit 1
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}
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trap trap_cleanup EXIT TERM INT
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# this will be set in test_ftrace_trace()
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target_function=
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test_ftrace_list() {
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echo "perf ftrace list test"
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perf ftrace -F > "${output}"
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# this will be used in test_ftrace_trace()
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sleep_functions=$(grep 'sys_.*sleep$' "${output}")
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echo "syscalls for sleep:"
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echo "${sleep_functions}"
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echo "perf ftrace list test [Success]"
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}
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test_ftrace_trace() {
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echo "perf ftrace trace test"
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perf ftrace trace --graph-opts depth=5 sleep 0.1 > "${output}"
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# it should have some function name contains 'sleep'
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grep "^#" "${output}"
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grep -F 'sleep()' "${output}"
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# find actual syscall function name
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for FN in ${sleep_functions}; do
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if grep -q "${FN}" "${output}"; then
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target_function="${FN}"
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echo "perf ftrace trace test [Success]"
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return
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fi
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done
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echo "perf ftrace trace test [Failure: sleep syscall not found]"
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exit 1
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}
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test_ftrace_latency() {
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echo "perf ftrace latency test"
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echo "target function: ${target_function}"
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perf ftrace latency -T "${target_function}" sleep 0.1 > "${output}"
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grep "^#" "${output}"
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grep "###" "${output}"
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echo "perf ftrace latency test [Success]"
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}
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test_ftrace_profile() {
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echo "perf ftrace profile test"
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perf ftrace profile --graph-opts depth=5 sleep 0.1 > "${output}"
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grep ^# "${output}"
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time_re="[[:space:]]+1[[:digit:]]{5}\.[[:digit:]]{3}"
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# 100283.000 100283.000 100283.000 1 __x64_sys_clock_nanosleep
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# Check for one *sys_*nanosleep line with a Count of just 1 that takes a bit more than 0.1 seconds
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# Strip the _x64_ part to work with other architectures, strip the clock part to support
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# C libraries that use the nanosleep syscall instead of clock_nanosleep
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grep -E "^${time_re}${time_re}${time_re}[[:space:]]+1[[:space:]]+.*sys_.*nanosleep" "${output}"
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echo "perf ftrace profile test [Success]"
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}
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test_ftrace_list
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test_ftrace_trace
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test_ftrace_latency
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test_ftrace_profile
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cleanup
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exit 0
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